To reduce carbon dioxide (减少二氧化碳);
To reduce pollution(减少污染);
To make our surroundings more beautiful(美化环境);
To prevent desertization(避免沙漠化);
To provide the birds with home(为鸟类提供家园);
To enhance human health(促进人类健康);
To give shelter from sandstorm (抵御沙尘暴);
To prevent soil loss(避免水土流失)